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Gastar Exploration Announces
Production on Second Utica/Point
Pleasant Well

Tuesday, June 30, 2015

HOUSTON, June 30, 2015
/PRNewswire/ -- Gastar Exploration Inc.
(NYSE MKT: GST) ("Gastar") reported
today initial and 30-day average
production on its second Utica
Point/Pleasant well.
The Blake U-7H well located in
Marshall County, West Virginia
produced at a peak 48-hour gross sales
rate of 36.8 MMcf/d of natural gas on a
32/64ths choke with approximately 6,235
psi of flowing casing pressure. On a
restricted flow basis, the well's post
peak rate 30-day production averaged
20.2 MMcf/d on a 26/64ths choke with
approximately 5,312 psi of flowing
casing pressure. The most recent
5-day average rate is 14.8 MMcf/d at
approximately 5,008 psi of flowing
casing pressure. The Blake U-7H
well was drilled with a lateral length
of 6,617 feet and was completed with 34
hydraulic fracturing stages that used
approximately 14.8 million pounds of
proppant. Gastar has a 50% working
interest in the Blake U-7H well and
41.1% net revenue interest in the well.

J.
Russell Porter, Gastar's
President and Chief Executive Officer,
commented, "We are very pleased with the
results of our second dry gas Utica well
as it demonstrates the consistency of
the prolific production from the Utica/Point
Pleasant play across our
leasehold. Currently, we have no
plans to drill another Utica/Point
Pleasant
well on our acreage until regional
natural gas prices improve and returns
on investment become competitive
relative to our other internal
investment opportunities."